Robust Dental Arch Curve Optimization Using a Standard Arch Form for Panoramic Reconstruction

songze zhang, Benxiang Jiang, Jingyi Lyu, Hongjian Shi

Keywords: Dental arch, Panoramic imaging, Polynomial curve fitting, CBCT

TL;DR: Robust Dental Arch Curve Optimization

Abstract: This study presents a robust dental arch curve optimization method for panoramic image reconstruction from CBCT images. The proposed approach integrates prior maxillofacial anatomical knowledge through a statistical standard arch form and introduces an assessment function to guide the fitting of anatomically accurate and convex dental arch curves. Experimental validation in clinically diverse CBCT datasets demonstrates the effectiveness of the method in challenging scenarios, including orthodontic appliances, rigid internal fixation, mixed dentition, complete edentulism, and impacted teeth. The results confirm that the proposed method enables high-quality panoramic image reconstruction suitable for various dental imaging applications.

Changes Summary:

1. Corrected typographical errors in formulas (e.g., Equations 3, 4, and 6).
2. Revised some notations in formulas: in Equation 2, modified BIC was changed to BIC_mod; since both Equations 2 and 7 contained alpha, the symbols in Equation 7 were updated by changing alpha to beta and beta to gamma.
3. Added an explanation in Figure 6 regarding the inconsistency in the widths of the images in the second column.
4. Corrected some description errors, such as replacing "datasets" with "volumes" when referring to individual cases.
5. Adjusted the spacing between figures and surrounding paragraphs (Figures 1, 2, 4, and 5).
6. Revised grammar errors.

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Submission Number: 2